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Goodwill and Intangibles - Schedule of Definite-Lived and Indefinite-Lived Intangible Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Amortized intangible assets: |  |
Gross carrying amount | $ 59,130 | $ 59,130
Accumulated amortization | (23,314) | (19,903)
Net intangible assets, excluding goodwill | 35,816 | 39,227
Unamortized intangible assets: |  |
Gross carrying amount | 9,960 | 9,960
Net intangible assets, excluding goodwill | 9,960 | 9,960
Gross carrying amount | 69,090 | 69,090
Accumulated amortization | (23,314) | (19,903)
Total amortized and unamortized assets, excluding goodwill | 45,776 | 49,187
Trade name – Limbach |  |
Unamortized intangible assets: |  |
Gross carrying amount | 9,960 | 9,960
Net intangible assets, excluding goodwill | 9,960 | 9,960
Customer relationships |  |
Amortized intangible assets: |  |
Gross carrying amount | 47,620 | 47,620
Accumulated amortization | (14,384) | (11,741)
Net intangible assets, excluding goodwill | 33,236 | 35,879
Unamortized intangible assets: |  |
Accumulated amortization | (14,384) | (11,741)
Backlog |  |
Amortized intangible assets: |  |
Gross carrying amount | 5,960 | 5,960
Accumulated amortization | (5,960) | (5,800)
Net intangible assets, excluding goodwill | 0 | 160
Unamortized intangible assets: |  |
Accumulated amortization | (5,960) | (5,800)
Trade name, trademarks and intellectual property |  |
Amortized intangible assets: |  |
Gross carrying amount | 5,550 | 5,550
Accumulated amortization | (2,970) | (2,362)
Net intangible assets, excluding goodwill | 2,580 | 3,188
Unamortized intangible assets: |  |
Accumulated amortization | $ (2,970) | $ (2,362)

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